Archaeologica.org

It's fun sometimes when your eyes play tricks on you, and you see a face that isn't really there, staring back at you from a power plug or a potato. This phenomenon is called face pareidolia, and it's something that humans, and even chimps, naturally do.

But it looks like facial features aren't the only thing that we see when we come across an illusory face. A new study has found that we also see age, emotion, and gender – and strangely enough the vast majority of these funny faces are perceived as male faces.